test/switch-case-selector-value-must-be-unique.fail.wgsl

# v-switch04: line 9: a literal value must not appear more than once in the case selectors for a
# switch statement: '0'

entry_point vertex = main;
fn main() -> void {
  var a: u32 = 2;
  switch (a) {
    case 10u: {}
    case 10u: {}
    case 10u: {}
    default: {}
  }
  return;
}